Brush



Sept. 15 1942.

C' G' ROWLAND BRUSH Filed April 23, 1940 lili ` ENT?? Patented Sept. 15, 1942 BRUSH Clarence G. Rowland, Newington, Conn., assignor to 'The lFuller Brush Company, Hartford, Conn., -a corporation of Connecticut Application April 23,1940, serial No. 331,141

'7 Claims.

My invention relates more particularly to that type of brushes which are employed for cleaning and scouring interior surfaces, the brush comprising the end of an arbor or spindle or means for attachment thereto, and an object of my invention, among others, is the production of a brush of simple construction which is particularly eicient for the purposes for which it is designed.

One form of a brush embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawing, in which- Figure 1 is a side view of a brush embodying my invention.

Figure 2 is an end view of the same.

Figure 3 is a view inV lengthwise central section.

Figure 4 is a view similar to Fig. 1 but looking in a direction at right angles thereto.

Figure 5 is a View in cross section on a plane denoted by the broken line 5-5 of Fig. l.

In the making of brushes embodying my invention I employ brush strips of trough shape comprising sides 6 and a base 1 with bristles 8 doubled within the channel in the strip and with a core wire 9 placed in the folds of the brush mass. The sides 6 are closed to rmly grip the bristles and retain them in place by a pinching action, the channel being preferably somewhat wider at the bottom than at the top by a convergence of the sides outwardly toward the edges. In effecting my purpose I form the backs or bottoms of the channel pieces or strips two shapes that are similar one to another, in that form shown herein the backs or bottoms being flat to form a bearing so that in placing them together back to back in the manner contemplating my invention a iirm and stable contact and support one by the other will result.

In one manner of construction two strips of proper length are placed back to back and one end of this double structure is firmly clamped in a holder while the other end of the double structure is clamped in a chuck or similar twisting device. The chuck is then rotated and the two strips are given a spiral form as shown in Figure 1. This twisting operation interlocks the two strips and secures them firmly together. The brush material is cut off level with the edges of the grooved strip at one end of the brush formed as above explained and the shank ll so formed, I

is inserted in a holder l2 and rmly secured therein in any suitable manner. The stem of the holder has a screw thread I3 by means of which it may be attached to a spindle or arbor for mechanical operation or to any other form of holder or handle for manually operating it as may be desired.

While the brush herein illustrated has a free unsupported outer end for insertion into a hollow article for the purpose of cleaning the same, it will be understood that the invention is not limited to a brush of this type, but may be embodied in brushes of various types adapted for various purposes. It is also my intent that the brush thus formed may consist of two or more strips placed back to back and twisted together in the manner described, two strips having been shown herein merely as a convenient way of disclosing the idea.

In the structure shown herein clamp screws I4 are shown as a means for securing the brush in the holder.

In accordance with the provisions of the patent statutes I have described the principles of operation of my invention, together with the device which I now consider to represent the best embodiment thereof; but I desire to have it understood that the device shown is only illustrative and that the invention may be carried out by other means and applied to uses other than those above set out, within the scope of the appended claims.

I claim:

1. A brush including a plurality of deformable channeled strips all of the same twisted form and with brush material secured in and projecting from the mouths of the channels, said strips being intertwined and thereby interlocked against separation laterally, with the backs in firm contact with each other and with the brush material disposed in spaced apart parallel rows in spiral form, a shank formed at one end of the twisted structure, and a handle or holder to which said brush is secured.

2. A brush including a plurality of deformable channeled strips all of the same twisted form and with brush material secured in and projecting from the mouths of the channels, said strips being intertwined and thereby interlocked against separation laterally, with the backs in firm contact with each other and with the brush material disposed in spaced apart parallel rows in spiral form, a shank formed at one end of the twisted structure, and means for securing said shank in a holder.

3. A brush including a plurality of deformable channeled strips, all of the same twisted form and with brush material projecting from the mouths of the channels, said strips being intertwined and thereby being interlocked against separation laterally, with the backs in firm contact with each other, and with the brush material disposed in spaced apart parallel rows in spiral form, the brush material being level with the edges of the grooves at-one end to form a shank, and a holder within which said shank is secured.

4. The process for making a brush that consists in creating a plurality of channeled strips all of the same shape and deformable to enable them to be intertwined, with brush material projecting from the mouths of the channels, placing said strips back-to-back in firm contact with each other, securing one end of said structure inI a` holder, securing the opposite end of said structure in a twisting device, and then twisting the strips into spiral form thereby interlocking said strips against separation laterally and producing parallel rows in spaced apart relation of spiral form from one end to the other of said structure.

5. A brush including a plurality of deformable channeled strips all of the same twisted form with brush material secured in and projecting from the mouths of said channels, said strips being intertwined and thereby interlocked against separation laterally, with the backs in firm contact With each other, and with the brush material disposed in spaced apart parallel rows in spiral form.

6. A brush including a plurality of deformable, spirally formed, disconnected channeled strips, all of the same construction with the bottoms or backs formed to fit one another, and with brush material secured in and projecting from the mouths of said channels, said strips being intertwined and thereby interlocked against separation laterally, thereby securing the backs in rm contact each to support another.

7. A brush including a pair of deformable channeled strips, both of the same twisted form and having4 flat backs, with brush material secured to and projecting from the mouths of the channels, said strips being intertwined thereby interlocking them against separation laterally, with said flat backs in firm contact with each other and with the brush material disposed in spaced apart parallel rows in spiral form.

CLARENCE GEO. ROWLAND. 

